docs: def parse_field_options(self, *options):
          """
          Parse the field options query string and return it as a dictionary.
          """
          defaults = {}
          for option in options:
              if isinstance(option, six.text_type):
                  tokens = [token.strip() for token in option.split(self.view.lookup_sep)]
  
                  for token in tokens:
                      if not len(token.split(":")) == 2:
                          warnings.warn("The %s token is not properly formatted. Tokens need to be "
                                        "formatted as 'token:value' pairs." % token)
                          continue
  
                      param, value = token.split(":", 1)
  
                      if any([k == param for k in ("start_date", "end_date", "gap_amount")]):
  
                          if param in ("start_date", "end_date"):
                              value = parser.parse(value)
  
                          if param == "gap_amount":
                              value = int(value)
  
                      defaults[param] = value
  
          return defaults